Bearing



Sept. 17, 1929. P. PAszKowsKl BEARING Filed Jan. 22, 1925 ATTORNEY Patented Sept. 17, 1929 l f '1,728,501y

N UNITED srfrlasl PATENT lcolei-lcs PAUL PASZKOWSKI, OF RVINGTON, NEW JERSEY, ASSIGNOR k'.TJO WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA BEARING Application filed January 22,`1925."NSer4ia1 No,`4,0`27.I

My invention relates to bearings and more particularly to bearings for the movable elements of electrical measuring instruments.

The object rof my invention is to provide an improved jewel bearing that .may be readily dismantled to permit adjustment and removal of the movable element of the meter and in which the jewel mountings may be readily replaced in case they become worn or injured. y

In accordance with my invention, the vertical shaft of a watthour meterl or the lile is mounted upon vertical bearing sleeves in upper and lower bushings on the frame of f the instrument The bearing sleeves may be removed vertically from the bushings to thus permit the shaft to be removed. The lower bearing comprises a jewel permanently mounted in a jewel-cup, the end of i the shaft being recessed to receive the jewelcup and slotted to facilitate the removal of the jewel by a suitable tool in case 1t becomes damaged.

My invention may be clearly understood upon reference to the accompanying drawings` in which Figs 1 and 2 are front and side views, respectively, of the electromagnet and moving element of a watthour meter embodymg my invention; l

Fig. 3 is a longitudinal sectional view, to an enlarged scale, of the shaft and bearings shown in Figs. 1 and 2;

Figs. 4 and 5 are detail views, to an enlarged scale, of the lower end of the shaft and the jewel-cup therefor;

Fig. 6 is a detail view of the threaded cap or thumb nut for securing the bearing sleeves in position, and

Fig. 7 is a detail view of the locking spring used in connection with the thumb nut shown in Fig. 6.

Referring to Figs. 1 and 2, the watthour meter shown comprises an electromagnet 1 having a pivoted armature member 2 actuated thereby in accordance with the degree of energization yof the electromagnet. The armature 2 is pivoted upon a pressed steel frame 3 that is secured to the electromagnet,

` the frame having integral lugs 4 and 5 for that purpose. The armature 2 is a flat disc and it is clamped to a vertical sliaft'G. The j shaft 6 is provided with a toothed pinion 7 for driving the usual register (not shown), andan upper bearing 8 of phosphor-bronze or the like that is adapted to cooperate with the steel rod 9 is supported by the'upper frame lug 41.

The shaft 6 hasan expanded lower tion 10t that is recessed at 11 to receivea jewel-cup 12 `(see'ligsl and 5). The jewelcup 12 contains a jewel-13 that is adapted to cooperate with a hardenedland polished steel ball 14 restingfupon a lower jewel 15 which is lsupported bythe flowerlug 5 on the-frame. Each ofthe lugst and 5 is proe vided with a perforated bushing -16 that is spun over at l'its endV 17 to secure the same to ther lug. The bushings 16 are threaded aty 18 to receive `athreaded cap or thumb nut 19. A sleeve member 20 carrying the elements of the kbearing is positioned inside of the bushing 16 and is providedwith a shoulder 21 abutting the end kof said bushing to position the sleeve member and rbearing elements accurately in a vertical direc# tion. f f

To remove the bearings and the 'shaft 6 from the fra-me, it is only necessary tounscrew the threaded caps 19, lift the Iupper sleeve member 2O out of ,they cooperating bushing 16 yand ydrop the corresponding lower sleeve member out of engagement with the lower bushing' 16; It`isof course, essential that the shaft 6 Iand the disc 2 be positioned accurately in both vertical and horizontal directions in order that they disc may be held in proper relation tothe electromagnetl. f f

This result is accomplished by reaming out the holes through the bushings 16 in a definite relation to the frame 3 and electroporl' y magnet 1 afterk the bushings have been seif the bearing elements upon the shaft 6 arev accurately positioned with respect to the disc ioo 2, and the sleeve members 2O with their bearing elements 9 and 15 are of uniform length, no individual adjustments will be required and the bearing elements in all instruments will be interchangeable.

ln assembling an instrument, the sleeve members are inserted in the upper and lower bushings 16 and the threaded caps 19 screwed up tight, thereby securing the sleeve members in the position determined by the shoulder' 21 upon each sleeve member. In order to prevent the threaded caps 19 from becoming loose. they are slotted, as indicated at 2Q, (see Fig. 6) tokreceive the straight portion 23 of a. locking spring 24. The slot 22 is cut deep enough to allow the portion 23 of the spring 24 to directly enga-ge the threads 18 in the bushings 16 and lock the cap 19 in place.

Although the jewels use-d in the lower bearings are carefully inspected before being mounted, one of the jewels is occasionally damaged in the construction of the instrument. Furthermore, a` jewel is sometimes damaged in service on account of the introduction of dirt or other abrasive material between the jewel and the ball-bearing 14. In order to facilitate the replacement of the defective jewel. the jewels are mounted in small cups, as shown in Fig. 5, and the ends or1 the sha-ft 6 and of the lower sleeve member 20 are recessed to receive the jewel-cup,

the cup being a pressed lit with the recess. The lower end of the shaft 6 is also slotted, as indicated at 25. to permit the introduction of a suitable tool to force the jewel-cup containing the defective jewel out of the shaft. A new cup is then inserted in the recess and is pressed into place. The lower sleeve member 20 is drilled. as shown at 26, to facilitate the removal of the lower jewel 15 by means of a. suitable vpunch or other tool inserted therein.

My invention is not limited to the precise form shown and described and. therefore, I do not wish it to be limited in scope except as indicated in the appended claims.

l claim as my invention: i

1. In combination a supporting member, a non-resilient sleeve member loosely engaging said supporting` member, a bearing on said sleeve member, a threaded cap for securing said sleeve member in place, and Jtrictional means for locking said cap.

2. In combination, a supporting member, a non-resilient sleeve member slidably engaging said supporting member, a bearing on said sleeve member, a threaded cap for securing said sleeve member in place, and frictional means for locking said cap.

3. In combination, a supporting bushing, a sleeve slidably engaging the inner surface of said bushing, said sleeve having a shoulder abutting one end of said bushing, a

bearing associated with said sleeve, means -cooperating with said bushing for retaining In testimony whereof, I have hereunto subscribed my name this 18 day of Decem- PAUL PASZKOWSKI.

ber, 1924. 

